Apparatus for making cement pipes.



A, Ei APPARATUS FoR MAKING CEMENT was.

APPLlCATiON HLED APLZS, i912.

Emme@ Api@ a, 1915.

4 SHEETS-SHEET 1.

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APPARATUS FOR MAKING CEMENT PIPES.'

APPLICATxoN man Win23, 1912.

LSQSQQQO v Patented A131265, 1915.

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A. V. )ENSEN APPARATUS FOR MAKING CEMENT PIPES.

APPLlcATloN man APR.23,1912.

Patented Apr. 6, 19H).

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@man sami ALEXANDER V. JENSEN, OF BROOKLYN, YORK.

APPARATUS .FOR MAKING CEMENT PIPES.

Specification of'Letters Patent.

Patented Apr. 6, 1915.

Application filed April 23, 19.12. Serial N10. 692,732;

pipes or hollow cementitious articles in general -and to provide thesame with reinforcement in a novel manner.

Another object is to provide a machine or machines of simple and noveldesign and construction for making cement pipes with reinforcement.

Still another object of the invention is to provide a novel form ofreinforcingmaterial foil hollow cementitious articles.

Other objects ancillary to the aforesaid objects of the invention willappear as this specification proceeds.

In the drawings 'and inthe following description I refer moreparticularly to cement pipes, but this is to be taken to include allsorts of hollow articles adapted to be produced and by my. improvedmachine, such for instance as telegraph and telephone poles, fenceposts, columns `and the like, and the appended claims should be read andconstrued .as covering all such articles, whether specifically referredto by name `or not.

ToI this end the invention comprises suchy parts and elements, andcombinations thereof, as are embodied in the following description andillustrated in the accompanying drawings which show, by way of illus.tration only, one form of carrying out my invention.l ,y l v In thesaid drawings Figure l'is an elevation partly in section fory makinghollow cylindrical reinforced cement pipes and like articles accordingto my invention. F ig.`2 is a plan view of the machine shown in Fig.` 1.Figs. 3 and 3a are detail views of the means for feeding the reinforcingmaterial to the machine taken on lines 3 and 3a in Fig. 4. Fig. 4 is apartial view of the tubular reinforcement which I prefer to employ.Figs. 5, 6 and 7 are detail views showing ceijtain steps in the makingof the cement pipe.` Fig. 8 is a detail view showing the manner ofattaching the outer wrapping member to the female end form. Fig. 9 showsa machine for making conical shaped hollow cement articles such astelegraph poles for instance. Fig. 10 shows a detail view of parts ofthe machine shown in Fig. 9. Fig..l1 shows a modification of the machineillustrated in Fig. 1. Fig. 12 shows still another modication ofthemachine shown in Fig. 1. Fig. 13 is a partial plan view of Fig. 12, andFig. 14 is a view partly in section of a cement pipe made according tomy invention.

Referring to Figs. 1 to8 the numeral 1 i represents a suitable base orbedplate and 2 is an upper frame, both of which are joined by andsupported on columns 3, 3, 3. J ournaled in said bedplate and upperframe are three vertical screw shafts 4, 4, 4 each of which carries atits lower end a gear 5 driven by a large gear 6 on a shaft 7. The gear 6is not fast on the shaft 7 but is coupled thereto by a suitable clutchmechanism as at 8 which may be operated by a treadle or in any otherapproved manner. The shaft 7 carries a worm wheel 9 driven by a worm onthe main driving shaft 10. Any other well known driving mechanism may beused to drive the shaft 7.

On the shaft 7 there is fiXeda turntable 11 which supports a femaleA endform 12 having an inner flange 13. Inside the latter and resting on saidfemale end form is a hollow pipe core formed by a collapsible pipe 14.Any form of collapsible cylinder may be used for this pupose. The mem'ber 12 carries a hook 15, 1g. 8.

16 is a platform provided with three nuts 17, 17, 17 in vthreadedengagement with the with a catch 21'adapted to engage the afo'resaidhook 15, see Fig. 8.

The platform 16 supports a guide member 22 for guiding or confining thecement or other material around the core 14. y

23 is a drum pivoted on the platform 16 and upon which is wound thereinforcing material 24. The' member 22 together with the inner' coreforms mold into which the cement is fed together with the reinforcingmaterial.

I propose to employ a flexible reinforcing material adapted to form atubular structure having reinforcing members both ways, longitudinallyand circumfcrentially of the pipe or cylinder, and further adaptedto beself interlocking or one, in which the variwill be seen that I form thereinforcement 24' of two parallel strands or lengths of pliable wire 25,25, which at short intervals 'are joined'by vertical members 26 whichprojectvtpwardly or to the olie side of said strands 25 `and the ends ofwhich are bent to form hooks'27. The tubular reinforcing striicture isformed by a plurality of turns ofthe material 24 and whereby the hooks27 are caused to engage the lowermost strand or length 25 of thesucceeding turn. The hooks are shown as being uppermost but they may ofcourse be reversed and thus engage the uppermost strand or length 25. Itis not important that the reinforcement be composed` of but two strandsrunning lengthwise and' short interlocking members positionedtransversely to them. More than two lengthwise members may be used andother members, at an acute angle to the strands 25 may be'em'ployed ifdesired all of those forms being within the contemplated scope of myinvention.

After the tubular reinforcement is embedded in the cement the strands 25resist or take care of circumferential stresses or strains, while themembers 26 form practically longitudinal reinforcing members running thelength of the pipe orsimilar article and resist bending or other strainsor stresses.

As is usual in machines of this character stamping means are providedfor stamping the cement closely around the inner core. In this instanceI provide a -battery of stamps y28 adapted to stamp 'the materialclosely on both sides of the reinforcement as shown in Fig. 1.

Thev stamps 28 are carried byvertically reciprocating rods 29 supportedandA guided in a bracket. 30. The stamps are operated by cam's 31 oninter-driven shafts 32. Motion is imparted to the latter from a shaft 33by gears 34. The shaft 33 is driven from one of the shafts 4 by atransmission mechanism 35 as will be easily understood.

36 is a spout through which the cement in plastic form is fed into thespace aroun'd Therev l1,134,2oe

the inner core. For certain classes of work I may employ a so-calledcement gun for forcing the material onto the reinforcement anddispensewith the stamps, or I may use both. The stamp bracket 30 ispivoted on the shaft 33 so as to be moved' into or out from workingposition will be explained later.

7 is a guide rail for leading the reinforceposition of the platform 16is low opposite the turntable 11 as shown dotted in Fig. 1. Thereinforcement 24 is unwound from the spool 23, led past a 'guide roll 43over the rail 37 and secured to a vertical pin 44 in the form 12, seeFig. 1. The clutch 8 is out Aand 'the shaft 7 is caused to rotate and atreinforcement which latter will be bent slightly inward. When b'oth thestrands 25 of the reinforcement have been covered by the cement theclutch 8 is thrown in to couple gear 6 to the shaft 7 whereby the shafts4 are caused to rotate by the gears 5. Con sequently the, platform 6begins to rise. Then the cement has reached a height equal to the heightof the guide 22, the wrapper 2Q, is unwound and its free end secured asin Fig. 8 and as the platform keeps on rising, the wrapper 20 is wrappedfirmly around the cement pipe as shown in Fig. 1 and the material withthe reinforcement embedded therein is firmly confined between the innercore and the wrapper. The reinforcing material is interlocked asfollows. During the operation the reinforcement passes over the rail 37as shown in the de- 'tail views `in Fig. 3. Immediately after it haspassed onto-the rail it is also` raised by riding up over the highportion 45 of rail. This is for the purpose of causing the low- `ermoststrand 25 to engage the hooks 27- of the preceding turn of thereinforcement. Also, by being lifted up a slight pull is eX- erted onthe vertical members 26 to prevent the latter from bending. Immediatelyafter .the reinforcing mesh has been thus interice withdrawn.

, menace llevel than. said hooks', thereafter being ingmesh being fed inat a lower level than' the hooks 27.--v This is also illustrated inFig..V 12 as will be pointedout later. Thus it will be seen that thelfeed of the reinforcing mesh and Athe wrapping :or outerform. member:20'is operated by the turntable 11 which alsofeeds the cement past thestamps.

When the platform16 has reached a` height at which the guide member 22isopposite the top, of the inner core as seen in Fig. 5, the gear 6 isuncoupled from the shaft 7 to stop the rotation of the screw- Shaftsand-the further' rising of the platform. @The 'wrapper 24 is cut off andthe end pinned or otherwise secured, the vstamps are swung out of theway and the feed chute The reinforcement is' cut off and the end bentdown.4 It will be lremembered, however, that the turntable is stillrotating.- .The male form member 40 is now lowereduntilits outeriange'41 which I will term amale end forming fiange incontradistinctionto the female end forming flange 13, rests on thecement. The member 40 may have; an inner guide fiange 48 to fit insidethe core 14. It is obvious then, that the member40 partakes of therotating-movement ofv the core and the cement, and it gradually by itsown weight forms the male end of the pipe as illustratedin Figs. 6 and 7forcing the reinforcement inwardly, out

i'nto the male end 49 of the pipe.A Next the platform may be operatedupward' to clear the finished pipe. The female member 12 is detachedfrom the turntable and the pipe.

inside the wrapper set aside to dry and harden. After this the core iscollapsedw l the invention and the scope and taken off and the wrapplngunwound to 'be used again and the pipeis finished for use, or thewrapping may remain on the 'pipe to. protect it during shipment.

In Fig. 11 I have shown a modified construction in which instead of thewrapper I use an outer cylinder '56 which is carried by the platform 16.The operation is similar to the above described, and it is a matter ofchoice whether or not the cylinder 50 remains on the cement pipe untilthe latter is hardened. If so, the cylinder will preferably be made intwo halves to be open as will be easily understood. p

Fig. 9 shows a machine for making conical pipes for use as telegraphpoles and thev same by springs 53. i IThe guide member isv madecollapsible in any suitable manner and A is, kept in position by springsas at 54. Similarly the guide rail 55 is pushed toward the cot'e bysprings as at\5 6 in' Fig. 10, and :guided bya guide 47. 'Fig 14 showsthe finished reinforced pipe.

The machine illustrated in Figs. l2'and 13l is of substantially the samedesign as those above described, but in' this vinstance the platform' 60is stationary while theinner core 61 and the .female end forming member62 are fed downward in addition to being rotated. These elements areshoun in their starting position in full lines and dotted in thgirfinishing position. 63 is the driving shaft which drives a gear 64 onthescrew shaft 84. The latter is threaded into the one half 65 of a nut66 and carries the core down as it is rotated. In this instance thestamps 67 and mesh spool 68 remain at a -constant level as will beunderstood. `When the pipe' has been formed the screw shaft 64 f is keptrotating but the nut half 65 is thrown out 'of engagement with the shaftby a member 69 which strikes the arm 70 of a bell crank 71. Thereafterthe male end forming member 72 is let down and operates as before toform the male' end of the pipe.

The turntable 73 is carried by a plunger 74 `under hydraulic pressure,for instance, and is lowered when the-pipe is finished to clear thelatter from the grinding membe` 75 which is provided with a cut out 46as aforesaid.- The outer form `member 76 is then detached from theturntable, the pipe removed and the machine is ready for anotheroperation.

The foregoing is thought to clearly set forth the construction andoperation of my pipe making machine and the construction of the finishedproduct.

Changes in the detailed construction may of course be made within theprinciple of of the appended claims.

I claim: -l. An apparatus for making reinforced cement pipe comprising acore, means for depositing a plastic material onto said core tol formthe pipe, means for supplying the latter with reinforcement, a flexiblemember and means for winding the latter around the 'pipe to support thesame.

2. An apparatus for making reinforced cement pipe comprisingavcollapsible core, means for depositing a plastic material onto saidcore to form the pipe, an outer shell forv 3. An apparatus for makingreinforced cement pipe comprising an inner core, a shell surroundingsaid core and spaced therefrom to form a circular mold, means forsupplying material to the latter, stamping means for compressing thematerial in said mold, a flexible member and means for wrapping thelatter around the pipe to support the sameafter being formed in saidmold.

4. An apparatus for making cement pipe comprising a core, a platform, acircular shell support-ed on thev latter and surround.

ing said core, but spaced therefrom to form an annular mold around thesame, means supportedfon said platform for feeding ma.

comprising a core, a circular member surrounding` the same but spaced adistance'I therefrom whereby an annular space is formed between saidcore and said circular member, means for supplying material to the saidspace to form the pipe therein, means for moving the said circularmember upwardly the length o f the core as the pipe is being'formcd ,andflexible means adapted to be wound around the core to`support thematerial thereon after-the pipe has been formed within the said space.

6. An apparatus for making cement pipe comprising a core forming a moldmember of a'length equal to the length of the finished pipe, an outermold member spaced f-rom said Core of a length less than that of thefinished pipe, means for moving said outer mold member upwardly thelength of the core as the pipe is being formed, means forsupplyingmaterial to the mold formed between the said two mold members, aflexible member and means for wrapping the same progressively around theformed pipe.

7 An apparatus for making cement pipe comprising an inner and anoutermold member forming a mold, means for feeding material into 'said mold,pivoted stamping means for compressing the material in the mold, meansfor supplying a reinforcing element and for winding the same in the wallof the pipe as it is being formed, leXi` Y ble wrapping means, means forWinding the latter around the pipe after the latter has been formed inthe mold and mechanism for causing said outer mold members and all ofthe aforesaid means to travel simultaneously lengthwise of the saidinner mold member.

Signed at New Yorln'N. Y., this 19th day of April, 1912. l

ALEXANDER V. JENSEN.

Witnesses:

IVAN Konicsnnc, K. Gr. LEARD.

